// Thud - a dynamic object-oriented language
// Copyright (C) 2010 David H. Hovemeyer <david.hovemeyer@gmail.com>

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#include <pthread.h>
#include <cstdlib>
#include <cstdio>
#include "util/Exception.h"
#include "util/String.h"
#include "util/Error.h"

static pthread_key_t s_errorMsgKey;

static void errorMsgDestructor(void *p)
{
	if (p != 0) {
		delete (Exception *) p;
	}
}

class ErrorInit_ {
public:
	ErrorInit_() {
		if (pthread_key_create(&s_errorMsgKey, &errorMsgDestructor) != 0) {
			fprintf(stderr, "Error: couldn't not create error message tsd\n");
			exit(1);
		}
	}
};

static ErrorInit_ s_errorInit; // force error tsd to be created

void Error::raise(Exception *e)
{
	void *p = pthread_getspecific(s_errorMsgKey);
	if (p != 0) {
		delete (Exception *) p;
	}
	pthread_setspecific(s_errorMsgKey, (void*) e);
}

Exception *Error::getException()
{
	void *p = pthread_getspecific(s_errorMsgKey);
	return (Exception *) p;
}

void Error::Die()
{
	Exception *e = getException();
	if (e) {
		fprintf(stderr, "Error: %s\n", String::toUtf8(e->getMessage()).c_str());
	} else {
		fprintf(stderr, "Error\n");
	}
	exit(1);
}

